SAN DIEGO – LaDainian Tomlinson, in his low-key, small-town Texas way of conversing, was talking about working with fullback Jacob Hester and the improvement the kid has made when something set Tomlinson off.

He leaned forward, his voice growing louder and, for a second, reaching a shrill pitch.

The thing that animated him was the mention of one of his best friends.

“I want to put that to rest – that we can't run the ball without Lorenzo,” Tomlinson said. “Lorenzo was Lorenzo. He helped us a bunch, but we can still run the football.”

No one missed Lorenzo Neal more than Tomlinson last season, the first after Neal's release by the Chargers. Neal was a close friend, a mentor and a lead blocker on so many plays for Tomlinson in their five years together. Tomlinson valued Neal as a veteran influence in the locker room and a physical presence on the field.

But, really, it's time to move on.

“Jacob is going to help us run the football more effectively this year,” Tomlinson said. “He's a year more experienced, so he's seen it. Man, it's hard to come in here and play right away as a rookie and just be good. It was hard for me. He's a year experienced, so he's going to be that much better.”

Hester sometimes didn't know which way was up in 2008.

“It was a whirlwind,” he said. “I didn't know what I was playing.”

Drafted in the third round as a fullback, Hester primarily played running back in training camp. Though seldom touching the ball until mid-November, he was primarily a running back until Mike Tolbert went down with a shoulder injury in the season's 11th game.

Hester was the starter at fullback from the beginning of December on, essentially learning on the job and doing it at 230 pounds – about 25 pounds lighter than Neal and 15 lighter than Tolbert.

In addition to an offseason of studying and learning, Hester gained about eight pounds.

“This extra (weight) gets that second push and that third push, to drive them past the hole,” he said. “It's been good ... I notice it every time I hit someone.”

Hester knows he won't be the kind of basher Neal was and that he doesn't need to be. The blocking might not come as naturally or easily, but he can do things Neal can't – like catch and run.

Hester had 19 carries for 95 yards and 19 receptions for 91 yards in '08. His presence gives the Chargers a viable weapon in the fullback. As effective and prescient a blocker as Neal was, his hands were made of brick and his feet often got tangled when trying to catch a pass.

“This offense has switched,” Hester said. “The whole NFL is switching (to) guys that can use leverage (to block) and still do stuff with the ball.”

More than his added bulk or power, Hester's defensive teammates have noticed improved angles and body control so far in camp.